Is it normal when first taking this tablet metformina to have a bad stomach and headaches?

Metformin is a medication used to treat type 2 diabetes. Like many medications, metformin can cause side effects, including upset stomach and headaches. These side effects are usually mild and go away within a few days or weeks. However, if they are severe or do not go away, it's important to talk to your doctor. To help reduce the risk of side effects, metformin is usually started at a low dose and gradually increased. Taking metformin with food can also help to reduce side effects. If you are experiencing severe side effects, your doctor may recommend reducing the dose or stopping the medication.